For the Noobs:
-More training levels especially for movement (like parkour station 1st floor style)
-Better bots that are easy to set up on any map/game mode (co-op too)
-Lock competitive mode until hard training levels are completed
For the Casuals:
-Drop in/out quick play servers
-Rematch button and game mode votes available for MM
-More than 3 player FFA etc.
-New game modes especially slower paced ones like freezetag or 1 life per round stuff
For the Pros:
-Make "Approved" widgets only for competitive mode
-Tier cosmetics/sprays for highest rank reached per season
-Rotate maps per season
The official release was definitely rushed, but this game is too good for us to let die when all we need to do is make more approachable and advertise it better